diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/pwritev64.c')
-rw-r--r-- | sysdeps/unix/sysv/linux/pwritev64.c | 59 |
1 files changed, 54 insertions, 5 deletions
diff --git a/sysdeps/unix/sysv/linux/pwritev64.c b/sysdeps/unix/sysv/linux/pwritev64.c index 1e8168f103..bed79b7aad 100644 --- a/sysdeps/unix/sysv/linux/pwritev64.c +++ b/sysdeps/unix/sysv/linux/pwritev64.c @@ -1,6 +1,55 @@ -#define PWRITEV pwritev64 -#define PWRITEV_REPLACEMENT __atomic_pwritev64_replacement -#define PWRITE __pwrite64 -#define OFF_T off64_t +/* Copyright (C) 2016 Free Software Foundation, Inc. + This file is part of the GNU C Library. -#include "pwritev.c" + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <sys/uio.h> +#include <sysdep-cancel.h> + +#ifdef __ASSUME_PWRITEV + +# ifndef __NR_pwritev64 +# define __NR_pwritev64 __NR_pwritev +# endif + +ssize_t +pwritev64 (int fd, const struct iovec *vector, int count, off64_t offset) +{ + return SYSCALL_CANCEL (pwritev64, fd, vector, count, + __ALIGNMENT_ARG SYSCALL_LL64 (offset)); +} +#else +static ssize_t __atomic_pwritev64_replacement (int, const struct iovec *, + int, off64_t) internal_function; +ssize_t +pwritev64 (int fd, const struct iovec *vector, int count, off64_t offset) +{ +#ifdef __NR_pwrite64v + ssize_t result = SYSCALL_CANCEL (pwritev64, fd, vector, count, + __ALIGNMENT_ARG SYSCALL_LL64 (offset)); + if (result >= 0 || errno != ENOSYS) + return result; +#endif + return __atomic_pwritev64_replacement (fd, vector, count, offset); +} +# define PWRITEV static internal_function __atomic_pwritev64_replacement +# define PWRITE __pwrite64 +# define OFF_T off64_t +# include <sysdeps/posix/pwritev.c> +#endif + +#if __WORDSIZE == 64 && !defined (__ASSUME_OFF_DIFF_OFF64) +strong_alias (pwritev64, pwritev) +#endif |